Does Worgen work for you? If they do, I see no reason why Goblins shouldn't..

Or are you, by any chance, using French client? If you do, french translation for Goblin is missing..
See here, how you can fix it --> www.warcraftrealms.com/forum/viewtopic.php?t=4728_________________Doing census mainly on Draenor; Raluf - Nimsay - Lusmo - Quixx - Sosyan - Garthog - Trubin - Zalistra, Zesmi and Djaang